135510 2014-08-01 09:58:35 -0700 Incorrect rendering of Unicode combining half marks on OS X 2017-09-19 18:33:34 -0700 1 1 1 Unclassified WebKit Text 528+ (Nightly build) Mac OS X 10.9 RESOLVED FIXED http://chris.improbable.org/experiments/browser/combining-half-marks/ P2 Normal --- 1 chris webkit-unassigned ap ebrahim mitz mmaxfield ned oldest_to_newest 1026253 0 chris 2014-08-01 09:58:35 -0700 One of our users reported a problem with the text displayed on http://www.wdl.org/en/item/10643/. The author name on that page uses the Unicode combining half marks COMBINING LIGATURE LEFT HALF and COMBINING LIGATURE RIGHT HALF (U+FE20, U+FE21) According to the Unicode 6.0 specification – see page 235-236 of http://www.unicode.org/versions/Unicode6.0.0/ch07.pdf – two adjacent marks should combine into a single curve. On OS X, the behaviour depends whether font substitution occurred so e.g. the current WebKit Nightly will display the tests at http://chris.improbable.org/experiments/browser/combining-half-marks/ correctly only for Arial but most other fonts will display incorrectly. Recent versions of Internet Explorer on Windows 7 or later display correctly in all cases. Chrome and Firefox are also inconsistent depending on the OS and font combinations. Previously reported to Apple as rdar://13105608 1026426 1 mitz 2014-08-01 21:08:17 -0700 Also happens in TextEdit with the same font, so likely not a WebKit issue. 1349652 2 ebrahim 2017-09-16 02:03:11 -0700 This seem to work now.